Gradacac, BiH
Gradačac (Bosnian pronunciation: [gradǎt͡ʃat͡s]) is a town and municipality in the northeastern part of Bosnia and Herzegovina, located roughly 40 km (25 mi) south of the Sava river. Administratively, Gradačac is part of the Tuzla Canton of the Federation of Bosnia and Herzegovina. The towns of Bosanski Šamac and Modriča lie near Gradačac. The city is well known for its castle.